Polishing-machine.



PATENTBD OCT. 8, 1907.

no.v 867,633.

P. H, 'BARZ, POLISHING MACHINE. APPLICATION FILED JAN. 26,1907.

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PATENTED OCT. 8, 1907. P. H. BARZ. POLISHING MACHINE. APPLICATION FILED JAILZB, 1907.

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No. 867,633. PATENTED OCT. 8, 1907. PI H POLISHING MACHINE. APYLIGATIOII ru-nn JAN. 2a. 1901.

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1X 1 t n no PAUL H. BARZ, OF CHICAGO, ILLINOIS.

POLISHING-MACHIN E Specification of Letters Patent.-

Patented Oct. 8, 1907.

Application filed January 26, 1907. Serial No. 354,224.

To all whom it may concern:

Be it known that I, PAUL H. BARZ, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Polishing-Machines, of which the following is a specification.

This invention is a polishing machine, particularly adapted for polishing wood surfaces, and provided with means for adjusting the angle and also the inclination of the rubbing block and for adjusting the height and the angle of the bed or work with respect to the rubbing block'or blocks. Improved means are also provided for reciprocating the polishing blocks and for adjusting the same to various positions with respect to the work.

The machine is illustrated in the accompanying drawings, in which Figure 1 is a side elevation thereof. Fig. 2 is a plan. Fig. 3 is a plan of a platform on which the bed which holds the work is mounted. Fig. 4 is a plan of a lower platform, below the platform shown in Fig. 3. Fig. 5 is a plan view of one of the rubbing blocks. Fig. 6 is a section thereof on the line 6-6 of Fig. 5. Fig. 7 is an end elevation thereof. Figs. Sand 9 are details in section of a sliding collar, which is connected to ,the rubbing blocks and allows angular variation thereof to accommodate irregular surfaces. Fig. 10 is a detail in section of a sprocket nut for shifting the supporting frame ofthe rubbing blocks.

Referring specifically to the drawings, A indicates the frame of the machine, of substantially rectangular shape or construction suitable to support the parts hereinafter mentioned.

13 is a movable or adjustable polishing frame which supports the polishing blocks indicated as a whole at b. The frame B is provided with a lower grooved bar B which has grooves in its sides forming guides for the blocks b. Said blocks slide back and forth on said guide bar, and one of the blocks is provided at the end with a head E (see Figs. 8 and 9)which fits over of around the guide bar B and is tongued and grooved to correspond therewith and is arranged to slide thereon. The head E has a circumferential rib c which fits in a corresponding groove in a collar E. This collar is connected by pivoted links D to a cross rod (1 extending between blocks D slidably mounted upon the top bars of the frame. Said blocks also have a cross bard connected by rod D to an adjustable crank block D This block is mounted in a frame consisting of rods f, cross pieces f and f at the end, and a screw F which extends through the block D The cross piece f is fixed to the end of the drive shaft D the whole forming an adjustable crank. By operating the screw F the position of the block D, and consequently the throw of the crank, may be Varied. I

The guide bar B may be turned on its longitudinal axis by means of the hand wheel B to accommodate the the polishing blocks to inclined or irregular work and the grooved collar and block E and 13 allows this to be done, since the latter will turn within the former to any desired extent. One or more polishing blocks can be used, and when more than one are used they are connected by means of links b, as shown in Figs. 1 and 2.

K is the upper platform or bed upon which the block or object to be polished rests, said block being indicated at b 1 This platform is held in position by means of a pin or pivot L which projects upwardly from the platform L into a Said bed rests at its outer or end edges'upon rollers Z which are carried in frames formed by pairs of parallel bars I, and these bars are supported at opposite ends upon links Z which are pivoted at one end to the bars and at the other end to cars m on the platform L. The bars I are connected by a cross bar 1 against which bears a roller 0 carried at the end of the lever 0. When the lever is straightened, as indicated in dotted lines in Fig. 3, the effect is to shift the frames I so that they are lifted, in consequence of the swing of the links Z thereby lifting the bed K. The lever 0 stops and locks against a pin p. The platform L is also provided with rollers n, upon the top thereof. By swinging the lever 0 to the angular position, as shown in full lines in Fig. 3, the frame carrying the rollers Z will be dropped, allowing the bed to lower until it rests upon the rollers n. When said bed K is lowered upon said rollers it can be rotated freely upon its pivot pin L, thus providing means to place the surface being polished at any desired angle. Hence to turn the object being polished to any desired angle it is simply necessary to drop the bed upon the rollers n and turn the same, after which the lever o is straightened to lift the rollers Z and raise the bed and bring the work in contact with the polishing blocks. To further vertically adjust the bed K there is provided, under the platform L, a lower platform M, at the corners of which are vertical screws 1" having sprockets q secured thereto, with a chain 8 extending around the sprockets. One of the screws has a hand wheel t, as shown in Fig. 1, by turning which all the screws may be turned, and the platform L and bed K lifted accordingly. This is to accommodate articles of any thickness which may be placed upon the bed K. Furthermore, means are provided to reciprocate or move the bed and platforms as a whole, under the rubbing blocks. Thus the lower platform M has depending brackets O which carry rollers N which travel in guides P in the end frames of the machine. Said platform moves crosswise, at right angle to the movement of the polishing blocks b, and thus a double movement is attained upon the surface being polished. The reciprocation of the platform M is effected by means of socket L in the bed K.

a connecting rod J whichis attached at one end to the platform and at the other end to a crank wheel I which is rotated by means of beveled gears II and II driven from the driving shaft D by means of a belt G and appropriate pulleys. The crank wheel I is preferably made adjustable to vary the throw.

The polishing block b is so constructed that its rubbing surface can be turned at an angle to the line of reciprocation, as illustrated in dotted lines in Fig. 2.

This enables the blocks to be used lengthwise or crosswise or at any other angle desired. to accommodate the work being polished. Thus, referring to Figs. 5 6 and 7, each block consists of an upper part 1 with a recess in the side to receive a clamping block 5 and a circular recess at the center to receive a pivot piece 4 which is undercut, as shown. The lower part 3 of the block maythus be turned crosswise or at an angle on the part 4 as a pivot, with respect to the upper part 1 which latter has grooves 2 to travel on the ribs of the guide bar B. At the ends of the block are projections 9 with ribs 9 said projections being fastened to the block with screws 10. A cross piece 6, with grooves cut in the ends thereof, to slide on the ribs 9 is provided at each end of the block and is moved by means of set screw 7 which passes through said cross piece and through the ends of the piece of felt or polishing material 8, and into the ends of the block. The upper and lower parts of the block are held together by the screw 4, and when the lower part of the block is turned to the desired angle it may be locked by the screw 11.

The frame B and the blocks carried-thereby are adapted to be shifted back and forth across the width of the machine by means of sprockets 0 connected by a chain belt G which turns said sprockets around the screws 0, which extend horizontally across the opposite ends of the machine. Said screws may be operated by hand or in any other suitable way. The frame B may also be raised and lowered by means of the lever C projecting from one of the links C by means of which the frame is supported upon the screws. and when so raised or lowered can be held in any desired position by the set screw C" binding on the screw c.

The various adjustments provided accommodate the machine to a large variety of work and the compound motion effected through the lateral reciprocation of the rubbing blocks gives a very efficient action and prevents uneven work. It will also be seen that the bed is capable of vertical and angular adjustment and that the frame carrying the rubbing blocks is capable of vertical and lateral adjustment. Consequently all parts of the work may be readily reached and rubbed in various directions.

I claim:

1. In a polishing machine, the combination with a bed for the work, of a Vertically and laterally adjustable frame above the same, having a guide bar, a rubbing block slidable on the guide bar and driving devices connected to the block, including a sliding cross bar and a link connecting the bar and block and movable along the bar according to the lateral movement of the said frame.

2. In a polishing machine. the combination with main frame, and a bed for the work supported thereon, of :1 guide bar adjustable laterally above the bed, a polishing block slidable 0n the guide bar, a pair of spaced blocks slidable on the top of the frame and having a cross bar connecting the same, a link pivolally connected lo the polishing block and to the cross bar. and mcnns to re ciprocate said sliding blocks.

3. In a polishing machine, the combination with a main frame and a bed for the work. of a frame suspended within the main frame and lmving a guide bar which may be turned on its longitudinal axis, a polishing block monnfed upon the guide bar and having :1 circulur head extending around the guide bar, a collar rotn'iably mounted on the head. and means connected to the collar to icciproculc fhc block.

r. In a polishing machine, the combination with u nmin frame and a bed for the work therein, of a polishing block slidable over the work. a pair of blocks slidublc on the upper part of the frame and having a connecting rod. link pivotally connected to the rod and lo the block and adjustable laterally along the rod, and means to reciprocate the said sliding blocks.

In a. polishing machine, the combination with :1 main frame, of a bed for the work, having vertical and angular adjustment therein, a frame mounted in the main frame above the bed and having vertical and lateral adjustment. rubbing blocks carried by the frame, and means to rccip rocate the blocks.

(3. In a polishing machine, the combination with a bed. and means to reciprocate the same, of a polishing block. and means to reciprocate the same above ihc bcd. iii an angle to the line of reciprocation of the bed.

7. In :1. polishing machine, the combinulion with u licd pivoted at the center. of a platform under the bed having rollers thereon, the bed being rotnfable upon said rollcrs. and means to lift the bed above said rollcrs and lo lowcr the same thereon.

S. In a polishing machine, the comhinulion will! u vcr tic-ally adjustable platform having rollers upon the top thereof, of a bed pivoted upon the platform and l'olziluhlc upon the rollers the bed being also vertically movable. and means to raise and lower the bed with respect to said rollers.

9. In a polishing machine, the combination with a plat form, of a frame above the same. pivofcd links hclwccn the frame and the platform, mcnns to swing the links to raisc or lower the frame, a bed mounted upon the frame and movable up and down thcrcwilh, the frame having rollcrs on which the bed rests and means to reciprocate the bodv 10. In a polishing machine. the combination with a guide bar, of :1 rubbing block slidable thereon. said block being formcd of upper and lower pnl'ls pivolcd together. the former of which engages the bar and the latter of which may be turned on the pivot at various unglcs wiih respect to the former.

11. In a polishing machine, the combination with a main frame and a bed for the work, of a frame monnicd within the main frame above the bed and having a lower guide bar which may be turned on its longitudinal axis. mcuns to raise and lower the latter frame. means to shift lll same laterally, a polishing block mountcd on [he guidc bar and capable of beiu turned therewith to various angles. and means to reciprocate the block on the bar.

In testimony whereof I allix my signuiurc. in prcscncc of two witnesses.

IAUL ll. IZAIIZ.

Witnesses Nnnmn Fini'rskoe, H. G. BA'rcnnLon. 

